I uninstalled quest helper after the patch for WOW because it wasn't showing up, but now when i try to install Questhelper via curse client it says " Failed to connect to previous instance what does this mean!!

it means all u have to do is exit out of the curse client and reload it i had that happen to me to

but quest helper is not working right now because of the patch they added today

Quest Helperer not working after patch. I have deleted, but still can not get installed.
Any suggestions? It was difficult to download the first time too.